// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding-for-await/ary-ptrn-rest-id-iter-val-err.case // - src/dstr-binding-for-await/error/for-await-of-async-gen-var.template /*--- description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [Symbol.iterator, destructuring-binding, async-iteration] flags: [generated, async] info: | IterationStatement : for await ( ForDeclaration of AssignmentExpression ) Statement [...] 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, lexicalBinding, labelSet, async). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 4. Let destructuring be IsDestructuring of lhs. [...] 6. Repeat [...] j. If destructuring is false, then [...] k. Else i. If lhsKind is assignment, then [...] ii. Else if lhsKind is varBinding, then [...] iii. Else, 1. Assert: lhsKind is lexicalBinding. 2. Assert: lhs is a ForDeclaration. 3. Let status be the result of performing BindingInitialization for lhs passing nextValue and iterationEnv as arguments. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization BindingRestElement : ... BindingIdentifier 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier, environment). 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat, [...] c. Let nextValue be IteratorValue(next). d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to true. e. ReturnIfAbrupt(nextValue). ---*/ var poisonedValue = Object.defineProperty({}, 'value', { get: function() { throw new Test262Error(); } }); var iter = {}; iter[Symbol.iterator] = function() { return { next() { return poisonedValue; } }; }; async function * gen() { for await (var [...x] of [iter]) { return; } } gen().next() .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => { assert.sameValue(constructor, Test262Error); }) .then($DONE, $DONE);